ASK vs AM,FSK vs FM, PSK vs PM

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electronics_kumar

Joined: 29 Nov 2004
Posts: 664
Helped: 26
Location: Tamilnadu

15 Feb 2006 11:48 ask psk fsk

i want the differences between ASK and AM ,FSK and FM ,PSK and PM'' ...to be precise i want to know Analog modulation versus Digital modulation(ASK vs AM,FSK vs FM, PSK vs PM). which one is superior....in terms of bandwidth,SNR or
P(e), modulating and demodulating complexity and so on..

ahmad_abdulghany

Joined: 12 Apr 2005
Posts: 1369
Helped: 212
Location: Cairo, Egypt

16 Feb 2006 10:26 ask vs fsk

You can read about them in Digitall communications systems by Simon Hykin,
they are explained in details and in easy way,

Best Regards,
Ahmad,

pixel

Joined: 16 Sep 2004
Posts: 574
Helped: 63

16 Feb 2006 12:08 fsk vs psk

AM, FM and PM three fundamental analog modulation techniques, while shift keying are digital

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eecs4ever

Joined: 31 Jan 2006
Posts: 181
Helped: 26
Location: Analog Environment

17 Feb 2006 20:14 fsk vs ask

This is a great link that explains a lot of this in detail.

http://www.complextoreal.com/tutorial.htm

Good luck.

ahmad_abdulghany

Joined: 12 Apr 2005
Posts: 1369
Helped: 212
Location: Cairo, Egypt

17 Feb 2006 20:20 ask fsk psk

eecs4ever wrote:

This is a great link that explains a lot of this in detail.

h**p://www.complextoreal.com/tutorial.htm

Good luck.

Yes, It's really great, but It will be further good if you have another similar link to a communications electronics site like the above!

Waiting for you!

Thanks,

yogeshh

Joined: 01 Dec 2005
Posts: 3

18 Feb 2006 15:44 ask vs psk

electronics_kumar wrote:

One of the best book for knowing it is "Digital Communications" by Sklar.
try to find it.

midolasi3

Joined: 28 Jun 2005
Posts: 33
Helped: 1

19 Feb 2006 15:41 difference between ask and fsk

Of course digital communications methodology is better , for more reading on this topic , you can read " Principles of communication systems " by taub & schiling

sivani_vs

Joined: 10 Feb 2006
Posts: 34
Helped: 14

01 Mar 2006 12:14 am vs ask

In terms of SNR digital modulation schems(FSK...) are superior than Analog modulations(FM...) for further details refer Communication systems by taub and shilling.

Smart

Joined: 28 Jan 2006
Posts: 96
Helped: 1

01 Mar 2006 13:30 fm vs fsk

For Complete understanding you should read system communication book, but i get an example :
your voice is wave. and it is an analog wave. if you digitize your voice with Analog to digital convertor then your voice will change to some 0 and 1. then if you send a short wave for 1s and do not sending any wave for 0s then it is ASK. it is the presence of signal for 1s and no presence of sigmal for 0s.